package com.cy.pj.sys.service.impl;

import com.cy.pj.common.exception.ServiceException;
import com.cy.pj.common.util.ValidUtils;
import com.cy.pj.sys.dao.SysRoleDao;
import com.cy.pj.sys.dao.SysRoleMenuDao;
import com.cy.pj.sys.dao.SysUserRoleDao;
import com.cy.pj.sys.pojo.CheckBox;
import com.cy.pj.sys.pojo.PageObject;
import com.cy.pj.sys.pojo.SysRole;
import com.cy.pj.sys.pojo.SysRoleMenuVo;
import com.cy.pj.sys.service.SysRoleService;
import org.apache.shiro.authz.annotation.RequiresPermissions;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.StringUtils;

import java.util.List;

@Service
public class SysRoleServiceImpl implements SysRoleService {
    @Autowired
    private SysRoleDao sysRoleDao;
    @Autowired
    private SysRoleMenuDao sysRoleMenuDao;
    @Autowired
    private SysUserRoleDao sysUserRoleDao;
    @Override
    public PageObject<SysRole> findPageObjects(String name, Integer pageCurrent) {
        //1.对参数进行校验
        if(pageCurrent==null||pageCurrent<1)
            throw new IllegalArgumentException("当前页码值无效");
        //2.查询总记录数并进行校验
        int rowCount=sysRoleDao.getRowCount(name);
        if(rowCount==0)
            throw new ServiceException("没有找到对应记录");
        //3.查询当前页记录
        int pageSize=5;
        int startIndex=(pageCurrent-1)*pageSize;
        List<SysRole> records=
                sysRoleDao.findPageObjects(name,
                        startIndex, pageSize);
        //4.对查询结果进行封装并返回
        return new PageObject<>(pageCurrent, pageSize,
                rowCount, records);
    }

    @Override
    @RequiresPermissions("sys:user:delete")
    public int deleteObject(Integer id) {
        //1.验证数据的合法性
        if(id==null||id<=0)
            throw new IllegalArgumentException("请先选择");
        //3.基于id删除关系数据
        sysRoleMenuDao.deleteObjectsByRoleId(id);
        sysUserRoleDao.deleteObjectsByRoleId(id);
        //4.删除角色自身
        int rows=sysRoleDao.deleteObject(id);
        if(rows==0)
            throw new ServiceException("此记录可能已经不存在");
        //5.返回结果
        return rows;
    }

    @Override
    public int saveObject(SysRole entity, Integer[] menuIds) {
        //1.参数有效性校验
        if(entity==null)
            throw new IllegalArgumentException("保存对象不能为空");
        if(StringUtils.isEmpty(entity.getName()))
            throw new IllegalArgumentException("角色名不允许为空");
        if(menuIds==null||menuIds.length==0)
            throw new ServiceException("必须为角色分配权限");
        //2.保存角色自身信息
        int rows=sysRoleDao.insertObject(entity);
        //3.保存角色菜单关系数据
        sysRoleMenuDao.insertObjects(entity.getId(), menuIds);
        //4.返回业务结果
        return rows;
    }

    @Override
    public SysRoleMenuVo findObjectById(Integer id) {
        //1.合法性验证
        ValidUtils.isArgsValid(id==null||id<1,"id的值不合法");
//        if(id==null||id<=0)
//            throw new IllegalArgumentException("id的值不合法");
        //2.执行查询
        SysRoleMenuVo result=sysRoleDao.findObjectById(id);
        //3.验证结果并返回
        if(result==null)
            throw new ServiceException("此记录已经不存在");
        return result;
    }

    @Override
    public int updateObject(SysRole entity, Integer[] menuIds) {
        //1.合法性验证
        if(entity==null)
            throw new IllegalArgumentException("更新的对象不能为空");
        if(entity.getId()==null)
            throw new IllegalArgumentException("id的值不能为空");

        if(StringUtils.isEmpty(entity.getName()))
            throw new IllegalArgumentException("角色名不能为空");
        if(menuIds==null||menuIds.length==0)
            throw new IllegalArgumentException("必须为角色指定一个权限");

        //2.更新数据
        int rows=sysRoleDao.updateObject(entity);
        if(rows==0)
            throw new ServiceException("对象可能已经不存在");
        sysRoleMenuDao.deleteObjectsByRoleId(entity.getId());
        sysRoleMenuDao.insertObjects(entity.getId(),menuIds);
        //3.返回结果
        return rows;
    }

    @Override
    public List<CheckBox> findObjects() {
        return sysRoleDao.findObjects();    }
}
